123. WAP to swap 1st and 2nd half of given array

 #include<stdio.h>

int a[10]={1,2,3,4,5,6,7,8,9,10},ele,i,j;

void main()

{

        ele=sizeof(a)/sizeof(a[0]);

        for(i=0,j=ele/2;j<ele;i++,j++)

        {

                a[i]=a[i]^a[j];

                a[j]=a[i]^a[j];

                a[i]=a[i]^a[j];

        }

 

        for(i=0;i<ele;i++)

                printf("%d ",a[i]);

        printf("\n");

}